THE GENITAL GLANDS AND DUCTS TESTIS 



219 



Aorta 



Lu 



Genital 



qland. 



Colon 

 Allantois 



Pulmonary 

 trunk 



Pulmonary 

 artery 



Umb'licaL 

 orrery 



FIG. 2 16. Ventral dissection of an 18 mm. pig embryo to show the anlages of the Muellerian ducts. X 7. 



Trachea 



Allantois 

 (Bladder) 



Lunq 



\\ Mesonephm 



Umbilical, 

 artery 



FIG. 217. Ventral dissection of a 24 mm. embryo showing the anlages of the Muellerian ducts at a 

 later stage of development than in Fig. 216. X 6. 



